Usher's Stepson Declared Brain-Dead

TMZ reports that Tameka Foster's son and Usher's stepson, Kyle Glover, has been declared brain-dead by doctors after a Friday accident in which he was struck in the head by a Jet Ski on Atlanta's Lake Lanier. Over the weekend, sources said, he was unresponsive and in critical condition, and Usher chartered a plane for Foster so that she could be by his side:

Usher's 11-year-old stepson has been declared brain dead by doctors following the accident Friday when he was struck by a jet ski ... TMZ has learned.

According to our sources, Kyle Glover (son of Usher's estranged wife Tameka Foster) has not experienced any brain activity since he was admitted to the hospital. We're told there has been no decision yet as to whether or not to take him off life support.

Our sources say Usher arrived at the hospital last night and Tameka has not left the hospital since she got there.